Christina Aguilera & Demi Lovato

Christina María Aguilera (born December 18, 1980) is an American singer, songwriter, actress, and television personality. Born in Staten Island, New York and raised in Rochester and Wexford, Pennsylvania, she appeared on the television series Star Search and The Mickey Mouse Club in her early years. After recording "Reflection", the theme for Disney's 1998 film Mulan, Aguilera signed with RCA Records.
Aguilera has earned two number-one albums on the US Billboard 200 with her self-titled debut album in 1999 and Back to Basics in 2006. Her albums Stripped (2002), Bionic (2010), Lotus (2012), and Liberation (2018) reached the top-ten in the United States. Further, her Spanish-language album Mi Reflejo and the holiday album My Kind of Christmas each topped Billboard component charts in 2001. Several of Aguilera's songs have experienced international success, including "Genie in a Bottle", "What a Girl Wants", and "Come On Over Baby (All I Want Is You)" from her self-titled debut which each topped the Billboard Hot 100, "Dirrty", "Beautiful", and "Fighter" from Stripped, "Ain't No Other Man" and "Hurt" from Back to Basics, and the collaborations "Lady Marmalade", "Moves like Jagger", "Feel This Moment", and "Say Something". Beyond her music career, Aguilera starred in the film Burlesque (2010) and has been featured as a coach on six seasons of the reality competition television series The Voice since 2011.
Aguilera has been recognized as a pop icon and earned the title "Pop Princess" in her early years. Her work has earned her five Grammy Awards, one Latin Grammy Award, and a star on the Hollywood Walk of Fame. Throughout her career, she has sold more than 50 million records worldwide. In 2009, she ranked at number 58 on Rolling Stone's list of 100 Greatest Singers of All Time, thereby becoming the youngest and the only artist under 30 to be named. Billboard recognized her as the 20th most successful artist of the 2000s, and Time listed Aguilera among the top 100 Most Influential People in the World of 2013. Aside from her work in the entertainment industry, Aguilera is involved in charitable activities through human rights, world issues, and her work as a UN ambassador for the World Food Programme.

Demetria Devonne Lovato (/ləˈvɑːtoʊ/ lə-VAH-toh; born August 20, 1992) is an American singer, songwriter and actress. After appearing on the children's television series Barney & Friends as a child, she received her breakthrough role as Mitchie Torres in the Disney Channel television film Camp Rock (2008) and its sequel Camp Rock 2: The Final Jam (2010).
Since signing with Hollywood Records, Lovato released her first studio album Don't Forget (2008) and was followed by five more albums: Here We Go Again (2009), Unbroken (2011), Demi (2013), Confident (2015) and Tell Me You Love Me (2017). Lovato earned seven top-twenty entries on the US Billboard Hot 100: "This Is Me", "Here We Go Again", "Skyscraper", "Give Your Heart a Break", "Heart Attack", "Cool for the Summer", and "Sorry Not Sorry". Of her television credits, Lovato starred as the titular character on Sonny with a Chance from 2009 to 2011; was featured as a judge and mentor on the American version of The X Factor in 2012 and 2013; and appeared as a recurring character on Glee. Her struggles with bipolar disorder, addiction, an eating disorder, and self-harm received significant media attention in the 2010s, in response to which she released the book Staying Strong: 365 Days a Year (2013) and a YouTube documentary about her life and career, titled Demi Lovato: Simply Complicated (2017).
Musically, Lovato is considered a pop, pop rock, and R&B artist. Lovato has received a number of accolades, including an MTV Video Music Award, 13 Teen Choice Awards, five People's Choice Awards, an ALMA Award, and a Latin American Music Award. Outside the entertainment industry, Lovato has been involved with several social and environmental causes since the launch of her career. In May 2013, she was cited for her dedication as a mentor to teens and young adults with mental health challenges at a National Children's Mental Health Awareness Day in Washington, D.C.. She has also become an advocate for the LGBT community. In 2014, she became the face for the Human Rights Campaign's Americans for Marriage Equality Campaign. In April 2016, Lovato was honored with the GLAAD Vanguard Award for her activism.